A fast moving item has a demand of 18000 units/year. The cost of one procurement is Rs. 50 andinventory carrying or holding cost is Rs. 1.20 per unit per year. It is assumed that supply is received assoon as the order is placed and no shortage or stock permitted. Cost of one unit is Rs. 8.Determine :(1)EOQ(ii) Number of orders/year(iii) Total cost per year

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Answered: A fast moving item has a demand of…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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The M–N plant manufactures two different products: M and N. Selling prices and weeklymarket demands are shown in the following diagram. Each product uses raw materialswith costs as shown. The plant has three different machines: A, B, and C. Each performsdifferent tasks and can work on only one unit of material at a time.Process times for each task are shown in the diagram. Each machine is available2,400 minutes per week. There are no “Murphys” (major opportunities for the system tofoul up). Setup and transfer times are zero. Demand is constant.Operating expenses (including labor) total a constant $12,000 per week. Raw materialsare not included in weekly operating expenses.a. Where is the constraint in this plant?b. What product mix provides the highest proi t?c. What is the maximum weekly proi t this plant can earn?
A toy factory is planning to make an additional item, which would be processed in 4 departments. The company is proposing to produce 600,000 units per year, working 250 days per year. The estimates of times made by an industrial engineer are in the table: Departments Times 1 2 3 4 Average processing time (second/part) 8 13 10 50 Average maintenance, time/day (minutes) 20 30 20 15 Average daily setup, time (minutes) 20 15 30 20 Average bookkeeping, time/day (minutes) 10 8 12 5 Machine adjustment, time/day (minutes) 15 10 15 15 Defective items, (% of production) 5 6 4 4 The parts are produced within the departments in a sequential manner (from department 1 to 2 to 3 to 4). Determine the efficiency of each departmental operation if only one shift is operated between 7:30 am-4:30 pm, with a 40 minute lunchbreak and two 10 minute coffee breaks.
ANSWER ONLY QUESTION 2) ANSWER ONLY QUESTION 2)
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Q3) The table below defines the precedence relationships and element times for a new assembled product. Annual demand for the product will be 126,000 units. The uptime efficiency=96%. The line will operate one 8 hours-shift/day, 6 shifts/wk. The repositioning time is 0.1 min. Manning level is 1.0 for all stations. Work Te (min) Immediate Work Te (min) Immediate element predecessors element predecessors 0.5 9. 3. 2 0.3 0.4 4,5 7. 3 0.8 0.5 3,5 1. 8. 0.2 0.3 7,8 4. 6. 2. 5 0.1 0.6 2. Determine Total work content time 0.5+ 0.3+0,8+0.2+0.) + 0.6+0,40.5+0.34 a6= 4.3 im (a) (a) Hourly production rate 126, 000/86x62= So.48/hx Cycle time ; 0,96x 60/50.48こ 91 Theoretical minimum number of workers 4.3/1.4) - 3 (p) Available service time (e) Actual number of workers/stations using the Most following tasks Rule (1) Total Ideal Time (8) Ideal time of station # 2 (4) Repositioning efficiency (!) Line Balance efficiency Balance delay Overall Labor efficiency (1)

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